| Title: | Styrene removal with an acidic biofilter with four packing materials: Performance and fungal bioaerosol emissions |
| Author(s): | Liu J; Yue P; Huang L; Zhao M; Kang X; Liu X; |
| Address: | "Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China. Electronic address: liujianwei@bucea.edu.cn. Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China. School of Resources and Environment, Linyi University, Linyi, 276005, China" |
| DOI: | 10.1016/j.envres.2020.110154 |
| ISSN/ISBN: | 1096-0953 (Electronic) 0013-9351 (Linking) |
| Abstract: | "The packing material used in acidic biofilters (ABFs) has a significant impact on styrene removal. The bioaerosol emission was rarely considered when evaluating the packing materials in the ABFs. Four ABFs packed with ceramsite, compost, lava and polyurethane (PU) were developed and compared for their styrene removal and fungal bioaerosol emissions characteristics over 529 days. The removal efficiencies of styrene in the ABFs were higher under the condition of longer empty bed residence time (EBRT) and lower inlet concentration. The maximum styrene elimination capacities of the ABFs with ceramsite, compost, lava and PU were 74.57, 87.81, 67.13 and 101.88 g/m(3) h, respectively. A lower pressure drop and the highest fungi count were observed in the ABF packed with PU. The emissions concentrations of fungal bioaerosols at the humidity of 63.5% were lower than those at a humidity of 42.7% and it increased with the air velocity. Additionally, the concentrations of fungal bioaerosols emitted from the ABFs packed with PU were 2168 +/- 145-3661 +/- 257 CFU/m(3), which was 33%-90% lower than those of the other three ABFs. The particle size distributions of the fungal bioaerosols emitted from the ABFs packed with PU and compost were mainly centered around large particles. Considering the removal of styrene and the fungal bioaerosols emissions, PU was the optimal packing material for ABF" |
| Keywords: | "Biodegradation, Environmental *Filtration Fungi *Styrene Biofiltration Emissions characteristic Volatile organic compounds Waste gas treatment;" |
| Notes: | "MedlineLiu, Jianwei Yue, Peng Huang, Lihua Zhao, Mengfei Kang, Xinyue Liu, Xueli eng Research Support, Non-U.S. Gov't Netherlands 2020/09/03 Environ Res. 2020 Dec; 191:110154. doi: 10.1016/j.envres.2020.110154. Epub 2020 Aug 30" |
